Biological Invasions in South Africa: An Overview

Springer eBooks, Journal Year: 2020, Volume and Issue: unknown, P. 3 - 31

Published: Jan. 1, 2020

Language: Английский

---

The economic costs of biological invasions in Africa: a growing but neglected threat?

NeoBiota, Journal Year: 2021, Volume and Issue: 67, P. 11 - 51

Published: July 29, 2021

Biological invasions can dramatically impact natural ecosystems and human societies. However, although knowledge of the economic impacts biological provides crucial insights for efficient management policy, reliable syntheses are still lacking. This is particularly true low income countries where resources insufficient to control effects invasions. In this study, we relied on recently developed "InvaCost" database – most comprehensive repository monetised invasive alien species worldwide produce first synthesis costs African continent. We found that reported ranged between US$ 18.2 billion 78.9 1970 2020. represents a massive, yet highly underestimated burden countries. More alarmingly, these exponentially increasing over time, without any signs abatement in near future. The were mostly driven by damage caused invaders rather than expenses incurred management. trend was skewed towards few regions (i.e. Southern Eastern Africa) activity sectors agriculture) small number taxa mainly three insect pests: Chilo partellus , Tuta absoluta Spodoptera frugiperda ). also highlight crucial, large gaps current need be bridged with more widespread research effort actions across Finally, our study support developing implementing preventive measures as well integrated post-invasion at both national regional levels. Considering complex societal realities countries, currently neglected problem should become priority sustainable development.

Language: Английский

---

The Biogeography of South African Terrestrial Plant Invasions

Springer eBooks, Journal Year: 2020, Volume and Issue: unknown, P. 67 - 96

Published: Jan. 1, 2020

Language: Английский

---

South Africa’s Pathways of Introduction and Dispersal and How They Have Changed Over Time

Springer eBooks, Journal Year: 2020, Volume and Issue: unknown, P. 313 - 354

Published: Jan. 1, 2020

Language: Английский

---

An Evaluation of the Impacts of Alien Species on Biodiversity in South Africa Using Different Assessment Methods

Springer eBooks, Journal Year: 2020, Volume and Issue: unknown, P. 489 - 512

Published: Jan. 1, 2020

Language: Английский

---

The Role of Environmental Factors in Promoting and Limiting Biological Invasions in South Africa

Springer eBooks, Journal Year: 2020, Volume and Issue: unknown, P. 355 - 385

Published: Jan. 1, 2020

Language: Английский

---

Biotic Interactions as Mediators of Biological Invasions: Insights from South Africa

Springer eBooks, Journal Year: 2020, Volume and Issue: unknown, P. 387 - 427

Published: Jan. 1, 2020

Language: Английский

---

Terrestrial Vertebrate Invasions in South Africa

Springer eBooks, Journal Year: 2020, Volume and Issue: unknown, P. 115 - 151

Published: Jan. 1, 2020

Language: Английский

---

An Assessment of the Potential Economic Impacts of the Invasive Polyphagous Shot Hole Borer (Coleoptera: Curculionidae) in South Africa

Journal of Economic Entomology, Journal Year: 2022, Volume and Issue: 115(4), P. 1076 - 1086

Published: April 14, 2022

Abstract Studies addressing the economic impacts of invasive alien species are biased towards ex-post assessments costs and benefits control options, but ex-ante also required to deal with potentially damaging invaders. The polyphagous shot hole borer Euwallacea fornicatus (Coleoptera: Curculionidae) is a recent introduction South Africa. We assessed potential impact this beetle by working across biological disciplines developing simulation model that included dynamic mutualistic relations between its symbiotic fungus. modeled growth in populations their effect on net present cost damage natural forests, urban trees, commercial forestry, avocado industry over 10 yr. high, baseline, low scenarios using discount rates 8, 6, 4%, plausible range mortality rates. Models predicted steady fungus populations, leading average declines tree 3.5 15.5% was 18.45 billion international dollars (Int. $), or about 0.66% country’s GDP for our baseline scenario ($2.7 $164 high scenarios). Most removal trees die as result fungal symbiont, has been found other regions. conclude an assessment system dynamics can be useful informing national strategies management.

Language: Английский

---

Towards a holistic understanding of non-native tree impacts on ecosystem services: A review of Acacia, Eucalyptus and Pinus in Africa

Ecosystem Services, Journal Year: 2023, Volume and Issue: 60, P. 101511 - 101511

Published: Jan. 23, 2023

Fast-growing, stress-tolerating tree species belonging to the genera Acacia, Eucalyptus and Pinus have historically been introduced many tropical sub-tropical regions support various economic environment-regulating functions. While these non-native (NNT) are often highly useful, simultaneously invasive, generating negative environmental impacts. Current knowledge regarding impacts of NNTs on ecosystem services (ES) that affect human well-being is largely informed by South African research, which inhibits a broader understanding contributions trees those services. widely globally, yet very little known about their contribution ES in locations. Here, we aimed summarise evidence for as benefits harm ES, focusing sub-Saharan Africa outside Africa. We conducted literature search using ISI Web Science, yielded 125 relevant publications. Although three were reported key Africa, data limited geographic scope, with strong bias towards East well biases certain service. The relative costs context dependent may not reflect actual Our review highlights need more systematic research from perspective manage potential conflicts guide better management prioritisation.

Language: Английский

---